Just don't take a breath to make up for it. For comparison to the 1g CO2 per search: - One breath: 0.001g - One hour of a 60 watt bulb: 0.060kg - One ga

Just don't take a breath to make up for it. For comparison to the 1g CO2 per search: - One breath: 0.001g - One hour of a 60 watt bulb: 0.060kg - One gallon gasoline burned: 8.9kg - One hour of El Chinyero vent: 90000kg (Note, it's late, so I may have screwed up some of the calculations between pounds, hours, and other imperial units)